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(No Modem R. WATKINS.

,AUTOMATIC RBPEATBR. l No. 474,706. Pat'e'nted'May,10, 1892,

mi f we/zr UNITED STATES PATENT OEEIcE.

RICHARD WATKINS,-OF SACRAMENTO, CALIFORNIA, ASSIGNOR OF ONE- HALF TOWILLIAM I'I. DEVLIN, OF SAME PLACE.

AUTOMATIC REPEATER.

SPECIFICATION forming part of Letters Patent No. 474,706, dated May 10,1892.

Application iiledPehruary 2, 1892i Serial No. 420|054- (N0 mdel') Toa/ZZ whom it may concern:

Be it known that I, RICHARD WATKINS, a citizen of the United States ofAmerica, residing at Sacramento, in the county of Sacramento and Stateof California, have invented certain new and useful Improvements inAutomatic Mechanical Repeaters, of which the following is aspecification.

My invention is an automatic mechanical repeater for electrical circuitsand relates to the mechanical construction of the repeater, which isplaced in the secondary circuit and is adapted to be operated from thevmain circuit by means of the reciprocating armatureor other mechanismof the instrument.

The invention consists in the simple construction and arrangement of theparts of the repeater', all as hereinafter fully set forth in theaccompanying drawings.

Figure l shows the armature controlled by the primary circuit and myimproved repeater in proximity thereto, adapted to be operated thereby,with a part of the secondary circuit in which the repeater is includedalso shown. Fig. 2 is a section through the repeater.

In the drawings, A represents the coils of the electro-magnet in theprimary circuit, and B represents the armature, which is connected to agong or other instrument controlled by the main circuit. This armatureis arranged so that it is directly in the path of the lever C, and thisleveris pivoted upon an insulated case, which carries binding-screws a,a upon its periphery, and from these screws extend the wires of thesecondary circuit. These screws which carry the ends of the wires passthrough the sides of the casing, being threaded into nipples 4, andtheir inner ends serve as contacts, the circuit being completed betweenthem th rough a lever b, the end of which is interposed between the endsof the screws, this lever being carried upon a pin,which hasits bearingin the casin g, extending through the bottom of it, where it isconnected to the eye of the lever C, the end of the lever C beingcovered with an insulating material or composed of an insulatingmaterial. A spring d encircles the end of one of the screws bearingagainst theinterposed end of the lever b and is prevented from slippingoff by means of a pin e, which passes through the lever, projecting oneither side thereof and forming on each side a seat for the spring andat the same time contacts for the ends of the screws. As the screws passthrough the screw-threaded nipples they are adjustable, so asV toincrease or diminish vthe space between their ends, and each screwcarries thereon a jam-nut f, which, after the screw has been Lproperlyadjusted, fixes the screw and holds itin its adjusted position.

The operation of the device is very simple. The lever C projects intothe path of the armature off the gong or other moving part of aninstrument, and as this armature is moved under the attraction of thecoils or the reversed movement of the spring itl imparts a like movementto the end of the lever C, which makes or breaks the circuit lagainstthe pressure of the spring encircling one of the screws. This spring maybe arranged to keep the contacts together or to keep them separated, andthe moving part may operate the lever to close the circuit or to breakthe circuit, as may be desired.

My invention is of great simplicity and is economical to make, an d, asthere are no coils, offers no resistance to the circuit. It is very easyof adjustment and the contacts are absolutely sure.

I claim as my inventionl. A repeater for the secondary circuit,consisting of adjustable screws forming terminals of the circuit andextending within a casing, an interposed contact-lever between theterminals,a circuit-carrying spring in contact with said lever, andmeans of operating saidlever by a moving part of the main circuit,substantially as described.

2. In combination, a casing,contactscrews forming terminals of thesecondary circuit eXtendin g into Said casing, alever interposed betweenthe terminals, va circuit-carrying spring in contact with said lever,and an in- 9 sulating-lever.connected with the first lever and in thepath of the armature of the gong or other instrument in another circuit,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

RICHARD vvATKINs.

Witn esses:

HENRY C. Ross, Jr., R. M. CLARKEN.

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